 Another 'bucking' question…. |
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| Larmo63 |
 Nov 13 2014, 07:30 PM
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Advanced Member  Group: Members Posts: 4,267 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California  |
After the third set of old heat exchangers on my '73 1.7 FI, I finally buttoned up exhaust leaks and now the car has started bucking/hesitation. All new ignition parts, timing, TPS exchanged with a new one, no difference. No known vacuum leaks. I can drive the car and it has power, but I have to drive "around" the hesitations. Fuel pump was replaced too. I'd like it to run better while I finish the 2056 carb engine. Ideas? (IMG:style_emoticons/default/headbang.gif)
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| dknechtly |
Nov 17 2014, 08:43 AM
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#2
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Yellow 914 Group: Members Posts: 68 Joined: 11-April 03 From: Wylie, TX Member No.: 560 Region Association: None |
Since it's on acceleration, check that your vacuum advance is working. Also check the mechanical advance moving nicely? All springs in place? Timing set right (@3500 with vac advance hoses unhooked and plugged)? Are the FI trigger points clean? Check the resistance; it should be very low.
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Posts in this topic
Larmo63 Another 'bucking' question…. Nov 13 2014, 07:30 PM
krazykonrad My guess is the MPS diaphragm has worn out. That c... Nov 13 2014, 08:28 PM mepstein Check all grounds and electrical connections aroun... Nov 13 2014, 08:33 PM 914_teener
After the third set of old heat exchangers on my ... Nov 13 2014, 08:36 PM r_towle Describe the bucking in more detail....
Accel or ... Nov 13 2014, 09:09 PM Larmo63 Mostly during acceleration. It doesn't want to... Nov 14 2014, 09:38 AM rjames Check all fuel delivery items from the filter to t... Nov 14 2014, 11:12 AM Larmo63 We only worked on sealing up the intake system. Ne... Nov 14 2014, 06:31 PM
Jasfsmith
We only worked on sealing up the intake system. N... Nov 17 2014, 08:59 AM
Philip W.
We only worked on sealing up the intake system. N... Nov 19 2014, 07:04 AM Gcotton92203 I had that problem twice. I found a leak at the va... Nov 14 2014, 06:43 PM r_towle Sounds lean.
Check injector seals?
Not visible, bu... Nov 14 2014, 06:59 PM 57lincolnman
After the third set of old heat exchangers on my ... Nov 14 2014, 09:03 PM larss Did you change to a new TPS or only to a new TPS c... Nov 15 2014, 12:27 AM colingreene quote name='dknechtly' date='Nov 17 20... Nov 19 2014, 03:38 AM Philip W. my last TPS was a replacement board and brand new,... Nov 19 2014, 06:47 AM |
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